Gk van wagenen



. 2 sheetssheet 1..,l G. VAN WAGBNEN. STOVE FOR'HEATING CARS, BOATS, &o.

, Patented Nov. 8, 1887.

(No Model.)

N. PETERS. Phowuxhagnpher, whinqwn. D. C.

2 sheets-*sheet '2,

(No Model.)

G. VAN WAGENEN.

s ToVE POR HEATING GARS, BOATS, aw.

,832. PatentedNov. 8, v18.87.

NA PETERS. Phow-Lithagmpher. wnshingten. D. C,

UNITED STATES PATENT EErcE.

STOVE FOR HEATINC? CARS, BOATS, 8&0.

SPECIFICATION forming part of Letters Patent No. 372,832, dated November8, 1887.

Application filed March 1S, 1887. Serial No. 231,382. (No model.)

, ble to stoves or heaters which are liable to be overturned or crushed,as are stoves employed in heating railway-cars and boats; and myinvention more particularly relates to a stove or heater of the kindwhich forms the subject of my application for Letters Patent, Serial No.228,015, led February 1 8, 1887. The stove which forms the subject ofthat application is composed of two or more concentric shells orjackets, the iire being Within the inner one, and which form a multiplewall containing air-spaces surrounding the fire. I have in thatapplication shown distance pieces or braces which extend between theseveral shells or jackets and maintain them out of contact with eachother, even if the stove be subjected to a blow or force which willcrush it.

The object of my present invention is to strengthen the angles orcorners which are formed by the several shells or jackets and end platessecured to them, and also to more edect ively prevent the transmissionof heat outward to the outer shell or jacket, s'o that the latter cannever become red-hot; also, to provide a more certain means forautomatically closing the smoke-outlet in case of the lstove beingoverturned. 'Y

My invention consists in'novel combinations of parts, hereinafterdescribed, and pointed out in theclaiins, which include angle-bracesextending from the corner or angle formed by one shell or jacket, withits end plate, to vthe corner or angle formed by the next outermostshell or jacket and its end plate, and also include braces ordistance-pieces of anovel construction, each of which is usually securedwith one end in contact with a shell or jacket and its other endnormally out of contact with and in proximity to another shell orjacket.

In the accompanying drawings, Figure l is a sectional elevation of astove or heater embodying my invention. Fig. 2 is a horizontal sectionthereof` upon about the plane indicated by the dotted line x x, Fig. l;andvFig. 3 is a similar section on the plane of the dotted line y y,Fig. l.

Similar letters of reference designate corresponding parts in theseveral gures.

The re, which is upon the grate A, is inclosed within a multiple wallcomprising airspaces and formed by two or more concentric shells orjackets, B B B2, ,three being here represented. These shells or jacketsare closed at the top by end plates, C C C, and at the bottom bycorresponding end plates, D D D2. I may make the inner shell or jacket,B, which forms the lire-pot, of cast metal; but the shells or jacketswhich are external to this are made of boiler-plate or other Wroughtmetal.

Edesignates the smokeoutlet, which I have shown as coincident in thestove top plates C O C2 and an aperture in each plate, except the plateC, is protected by a grating, e, as described in my aforesaidapplication, and the top plates are held at the desired distance apartby braces or flanged distance-pieces E', here shown as rectangular inshape and as bolted or riveted to the top plates C C C.

I havehere shown a like construction of the several shells or jackets BB B2, their top plates, CUC?, and the bottom plates, D DD, in so far asthe method of joining and bracing them is concerned, and it is obviousthat this construction may be employed at either or both ends.

Referring to the top plates C C Cz it will be observed that the topplates C of the shell or jacket B is connected therewith by bolts c, andthat around the upper end of each of the shells or jackets B B2 is anangle-iron band, b, secured by rivets to the shell or jacket, and thatthe corresponding tcp plate C or O2 is secured in place by bolts b,which extend through the top plate and through the horizontal iiange ofthe angle-iron b.

I have shown braces or distance-pieces F as secured between the shellsor jackets B B B2, as I shall soon describe, or between the top plates-GC C2; but in so far as described no means are provided for bracing theangles formed between the top plates and their respective shells orjackets B B' B2. To brace the structure at these points, I provideanglebraces G G. These anglebraces may be formed of cast-iron ormalleable iron, and are arranged in circular series at suitabledistances around kthe circumference of the stove, as is best shown inFig. 2. Each of them may be formed with a rabbet, d, tting an innershell or jacket, and its top plate or end plate, B C, for example, andat its outer end the anglebraces may tit against the next outermostshell or jacket and top plate, B C', for example. I have represented thebraces G G as secured in position by the same bolts, c b2, which holdthe top plates C G on their respective shells orjackets B B; and it willbe observed that these braces sustain the shells or jackets at thecorners or angles which are formed by the joining of the end plates C CCl to them, and thus brace what otherwise might be considered the weakpoint in the structure.

The braces F, which I have shown as arranged between the shells orjackets B "i, and also between the end plates, C C Ci land D D D2, maybe made of cast or malleable or other metal,aud, as rcp resented,theyhave broad ends which give them an extensive bearing against the partswhich they separate, and prevent them from upsetting or turning over incase of a crushing force or blow being delivered upon the stove at anypoint. I have shown each brace F as secured by a rivet, f, to the shellor jacket,or to an end plate, and it may be recessed in its end, as atf', to receive the head of the rivet f. The braces F are each securedwith one end against a shell or jacket or end plate and with its otherend normally out of contact with butin close proximity to the ad jacentshell or jacket or plate. The narrow spaces f thus afforded between theend of the brace F and the shell or jacket adjacent to that to which itis secured prevents the rapid conduction of heat to the outer shell orjacket, and will prevent the same from becoming red hot. Notwithstandingthese spacesfa blow or crushing force exerted upon the stove will bringthe braces or distance-pieces F to a bearing on the shell, jacket, orplate toward which they extend, and they will prevent the shells,jackets, or plates from being forced into contact with one another, andwill therefore prevent the exterior of the stove from ever becomingred-hot, so that it would set lire to surrounding objects.

In order to still further guard against the outer jack or shell, B2,ever becoming red-hot, I have represented a washer, f 3, ofnon-conducting material-such as asbestos-introduced between the outershell or jacket, B2, and between the end plates C2 D2 and the braces ordistance-pieces F, secu red to them.

It will be observed that at the bottom of the stove I have shown thesame construction of angle-braces G G as at the top, and the sameletters of reference apply to the construction of the joints between theshells orjackets B B B2 and the bottom plates, D D D2.

The smoke-outlet E in the plate C is not protected by any grating, butconstitutes a valve-seat, against which a ball or spherical valve, H,closes by gravity in case of the stove being overturned. I have hererepresented the valve H as supported by arms or knees H, extendingradially inward from the shell or jacket B, which constitutes thestove-body, and held at proper relative distances apart by a ring orannular brace. H2. Any crushing action from collision or otherwiseexerted upon the stove-body while upright will raise the inner ends ofthe arms H at their points of contact with the ball or sphere H and liftthe ball to its seat in the smoke-outlet before the stove is overturned,thus preventing any unforeseen obstacle from interfering with itsclosing by gravity. The inner shell orjack et, B, may be made ofwrought-iron down to the joint bi, formed by bolts or otherwise, withthe lire-pot B3, which latter may be of cast metal. The stove may havesuitable doors, which may be held by fastenings, such as those shown inmy applications for Letters Patent, Serial N os. 228,015 and 228,692,filed, respectively, February 18 and 24, 1887.

I do not claim herein a brace or distance piece, F, broadened at one endonly, as my application No. 230,153, Bled March 4, 1887, shows such abrace riveted to the shell or jacket at one end and broadened at itsfree end; but I only seek to cover herein such a brace broadened both atits free end and at the end where it is secured to the shell or jacket.

I am aware that it is not broadly new to provide within a stove-body aball, which, when the stove is overturned, will roll into position toclose the smoke-outlet and absolutely pre- `venttheesoape of coals.Incase of railroad.

accidents, however, the stove in most cases is liable to be crushedbefore being overturned, and if it be crushed, ordinarily such a ballwould be jammed in its inoperative position and could not roll to closethe smoke-outlet when the stove is accidentally overturned. I thereforecombine with a ball for closing the Smoke-outlet a series of arms-suchas H- which extend inward from the side walls of the stove, and whichhave a point of attachment with the wall of the stove at about thebottom of the ball, and when the ball is thus supported and the stove issubjected toa crushing action or bent inward its sides will throw up thearms H', and will thus lift the ball to the position to close thesmoke-outlet before the stove is ever overturned. This result cannot besecured by arms or fingers depending from the top of the stove or from apoint above the ball and serving to sustain the ball, and the result canonly be secured by arms-such as H--which have a point of attachment tothe stove-wall about on a level with the bottom of the ball.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. The combination, in a stove, with multiple walls separated byair-spaces and composed of cylindric shells or jackets and end platessecured to the cylindric shells or jackets, of one or more angle-bracesextending from roo IIO

the corner or angle formed by one shell or jacket and its end plate tothe corner or angle formed by the next outermost shell or jacket and itsend plate, substantially as herein described.

2. rlhe combination, in a stove, 'with multiple walls separated byair-spaces and composed of cylindric shells or jackets and end platessecured to them,'of one or more circular series of angle braces orknees, G G', eX- tending from the corner or angle formed by one shell orjacket and its end plate to 'the corner or angle formed by the nextoutermost shell or jacket and its end plate, substantially as hereindescribed.

3. The combination, with the two or more concentric shells or j ack etsand their endA plates, of the angle-iron band b at the joint betweeneach shell or jacket and its end plate and the circular series of anglebraces or knees G G, substantially as herein described.

4. The combination, with two or more concentric shells or jackets andtheir end plates, of braces or distance-pieces secured with one end incontact with a shell or jacket and its other end normally out of contactwith but in proximity to the adjacent shell or jacket, substantially asherein described.

5. rlhe combination, with two or more concentric shells or jackets andtheir end plates, of braces or distance-pieces F, each secured to ashell or jacket at one end, and having both its free end and the endwhich is secured to the shell or jacket broadened to give an eX- tensivebearing on the two shells or jackets between which it is placed,substantially as herein described.

6. The combination,with two or more shells or jackets and end plates, ofthe braces or dis- .tancepieces F, each secured by a' rivet, f, to

one shell or jacket and recessed at the end to receive the head of therivet, and adapted to preserve approximately'the distance between thetwo shells or jackets, substantially as herein described.

7. rlhe combination, with a stove having at the top a smoke-outlet, E,ofthe ball-valve H, for closing the same in case of the stove beingoverturned, and a series -of radial arms, H', extending inward from thesid'e wall of the stove, and having a point of connection with thestove-wall about opposite the bottom of the ball, whereby the arms willserve to support the ball-valve and to raise it to close the outletincase the stove is crushed in before being overturned, substantially asherein described.

GEO. VAN WAGENEN.

